IBM Informix Developer's Handbook - IBM Redbooks

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1.1 Server options There are a number of options for IBM Informix servers that are designed to meet the needs of business enterprises that range in size from a small group with a few employees up to several thousand people. The database needs to meet a variety of requirements of a diverse group. This section includes a brief discussion of each of the server possibilities and how they are generally used. With the wealth of different server types available, unless otherwise noted, each comes with the opportunity to use the IBM Informix Client Software Development Kit (Client SDK) for development of applications. Prior to renaming the brand editions in May 2010, IBM Informix had several versions. You can expect that each version is backward and forward compatible, beginning with 7.2x and moving forward through 7.3x, 9.2x, 9.30, 9.40, and 10.00. The Cheetah series began with Informix Dynamic Server 11.10 and quickly advanced into the 11.50 family. At this writing, the IBM Informix Ultimate series is now available, which begins with 11.50.xC7 and following. It is helpful to be aware of version numbering conventions: ► The letters UC or UD at the end of a version number indicate 32-bit UNIX®. ► The letters TC indicate a 32-bit Windows version. ► The letters FC indicate a 64-bit version (UNIX or Windows). 1.1.1 Informix servers These naming conventions become important in application and memory addressability. A 32-bit application works with a 64-bit server, but the application can access only 32-bit memory. Several options are available for IBM Informix servers. Each option is designed to address specific needs in business. This section discusses these different options. No-charge editions The following no-charge editions are available as separate offerings subject to the IBM International License Agreement for Non-Warranted Programs (ILAN): ► Informix Developer Edition ► Informix Innovator-C Edition 2 IBM Informix Developer’s Handbook
Informix Developer Edition The Informix Developer Edition provides all the features of Informix at no cost, when used solely for application development and testing. It can be used for application development and prototyping with no time limits. Support is available by way of the Informix user community through Internet forums. Informix Developer Edition offers the following application development choices: ► C ► C++ ► .NET ► Java ► Ruby on Rails ► Perl ► Python ► PHP ► 4GL Informix Developer Edition supports the following operating systems: ► AIX® ► HP ► UNIX ► Linux® ► Macintosh ► Sun Solaris ► Windows This Informix edition is limited to 1 CPU, 1 GB memory, and 8 GB storage. Informix Developer Edition includes the following bundle: ► Informix Client Software Development Kit ► Informix DataBlade Developers Kit ► Informix Spatial Datablade Informix Innovator-C Edition The Innovator-C Edition provides a robust and powerful environment that is designed to support small production workloads. It features the most widely used data processing functionality, including limited Enterprise Replication and high availability clustering. Chapter 1. Introduction to IBM Informix 3
Page 1: IBM Informix Developer’s Handbook
Page 4 and 5: Note: Before using this information
Page 6 and 7: 3.2 Setup and configuration . . . .
Page 8 and 9: 8.3.1 Connecting to the database .
Page 10 and 11: 12.5.2 Compiling the wrapper code .
Page 12 and 13: Trademarks IBM, the IBM logo, and i
Page 14 and 15: Krishna Doddi (also known as Prasad
Page 16 and 17: Comments welcome Your comments are
Page 20 and 21: This edition offers the following a
Page 22 and 23: either an HDR secondary or RSS seco
Page 24 and 25: There are three edition options for
Page 26 and 27: functions. An application calls the
Page 28 and 29: The IBM Data Server Driver for JDBC
Page 30 and 31: OLEDB Microsoft OLE DB is a specifi
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Page 34 and 35: 1.3.1 Architecture overview An unde
Page 36 and 37: Physical and logical logging As eac
Page 38 and 39: Before you select an API or library
Page 40 and 41: Hidden, behind-the- scenes tasking
Page 42 and 43: 2.1 Server setup In this section, w
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Page 46 and 47: Figure 2-1 shows the Server Informa
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Page 50 and 51: 2.2 Client setup ► Edit the Infor
Page 52 and 53: Figure 2-4 illustrates the options
Page 54 and 55: 2. Prepare the environment. You nee
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Page 64 and 65: 2. On the Software License Agreemen
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3. Extract the IBM Data Server Driv
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For a silent installation on both W
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Configuring the JDBC driver To use
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3.1 ODBC and Informix ODBC is a sof
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► IBM Informix ODBC Driver (64-bi
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You can set optional configuration
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Parameter Description Insert Cursor
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Table 3-5 shows the ODBC libraries
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Keyword Description DriverODBCVer S
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Keyword Description DESCRIBEDECIMAL
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If there is no database alias defin
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Example 3-5 shows a simple db2cli.i
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The application sends SQL request t
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} 78 IBM Informix Developer’s Han
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SQLSMALLINT DecimalDigits, /* ibSca
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If your application requires only S
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84 IBM Informix Developer’s Handb
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} SQLCHAR sname[15+1]; SQLLEN lcode
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fprintf (stdout, "Connected\n"); 88
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SQLAllocHandle (SQL_HANDLE_ENV, SQL
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SQLAllocHandle (SQL_HANDLE_ENV, SQL
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94 IBM Informix Developer’s Handb
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contains the data or special attrib
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Function Description ifx_lo_specset
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SQLSMALLINT lospec_size; SQLINTEGER
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4. Call ifx_lo_open() to open the s
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SQLBindParameter (hstmt, 1, SQL_PAR
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} SQLFreeHandle (SQL_HANDLE_ENV, he
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SQLCHAR*insertStmt = (SQLCHAR *) "I
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Accessing a complex data type Examp
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C:\work> 3.3.5 Error handling Ludwi
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C:\work>connect_error demo_on;UID=w
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We create a function called CheckDi
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Figure 3-14 shows the Tracing tab.
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Example 3-36 demonstrates how to se
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DRDADEBUG All IBM Data Server drive
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124 IBM Informix Developer’s Hand
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4.1 Informix ESQL/C Informix ESQL/C
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Example 4-1 shows a simple sqlhosts
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Compiling ESQL/C programs The esql
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Platform Environment variable Linux
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Example 4-3 shows a statement that
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:fname[i], :lname[i], :company[i],
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The SELECT statement shown in Examp
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EXEC SQL fetch ex_cursor into :n1,:
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Table 4-3 lists a few ESQL/C data t
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the sbspace in the server before yo
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Example 4-10 shows the ESQL/C comma
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Example 4-12 shows the output of Ex
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} EXEC SQL END DECLARE SECTION; 150
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C->S (16) Time: 2010-07-06 20:21:58
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5.1 JDBC drivers for an Informix da
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5.1.2 IBM Data Server Driver for JD
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Example 5-4 shows the CLASSPATH env
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Example 5-6 shows the compile line
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programmer uses Java data types to
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Example 5-9 shows the syntax of the
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" Connected to Informix Dynamic Ser
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5.4.2 Manipulating data In this sec
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conn.close(); } catch ( Exception e
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Example 5-15 demonstrates how to di
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conn = DriverManager.getConnection(
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con.setAutoCommit(false); Statement
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System.out.format("Last row: \t%d,"
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PreparedStatement pstmt=conn.prepar
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System.err.println(e); } } } Exampl
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Issuer: CN=bedfont.uk.ibm.com, O=ib
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5.6.1 Class not found errors The fo
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5.7.2 IBM Data Server Driver for JD
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6.1 Hibernate for Java This section
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A Hibernate application includes th
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6.2.2 Configuration File Descriptio
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Example 6-3 shows a hibernate.cfg.x
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name="State" table="States">
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Example 6-6 shows the CLASSPATH var
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informix password org.hibernate
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Example 6-11 shows basic Java code
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The only difference between the loa
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1, AZ, Arizona 2, CA, California C:
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Example 6-19 shows the output of th
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private Long id; private String cod
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7.1 IBM Informix OLE DB Provider In
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through COM. You can use it to test
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7.3.1 Supported interfaces An OLE D
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7.3.3 Type mapping Keyword Descript
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7.3.4 Cursors Informix OLE DB Provi
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Example 7-3 demonstrates how to con
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Connect to the Database Server CHEC
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#define CHECK(hr) if (((HRESULT)(hr
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} 232 IBM Informix Developer’s Ha
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if(lDataLength > 0) { // Call GetCh
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_bstr_t bstrPassWord = "password";
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Provider with some of the available
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cx.connectionstring = "Data Source=
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California 0.08250 c:\work> 7.4.3 S
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The user ID for the Informix databa
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happen that the 32-bit provider is
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7.5.2 Tracing Failure when handling
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A44: 53C Exit Object Address: 0x032
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8.1 Informix and .NET data provider
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Both providers have the same assemb
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Example 8-3 shows how to compile an
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Attribute Description Default Exclu
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The majority of the connection stri
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Data Server Provider for .NET type
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Example 8-7 shows the output of Exa
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Table 8-9 lists the methods that th
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Method Description IfxMonthSpan Get
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} } int drows=0; 272 IBM Informix D
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Example 8-16 shows the output of Ex
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Method Description Int64 Seek(offse
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... 280 IBM Informix Developer’s
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IfxConnection conn; IfxClob vclob;
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Property Type Description Year Int3
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Hour : 8 Minute: 20 C:\work>c Arith
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Method Description Compare(IfxDec1,
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C:\work>decimal Value Sales Tax : 0
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Ceiling Sales Tax : 1.0 Negative Sa
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Visual Studio Add-In provides tools
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9.1 Informix and PHP extensions The
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- Console mode Enter one of the fol
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9.2.4 Verifying connectivity You ca
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► Secure Although PHP is open sou
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*--- persistent connect trusted use
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In a web application, the input dat
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Dynamic SQL statements Dynamic SQL
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$stmt->bindValue(':p9', $_POST["pho
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*--- Verification ---*/ $stmt1=$dbc
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$row=$stmt1->fetch(PDO::FETCH_ASSOC
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} /*--- Get the BLOB from the datab
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In Example 9-17 on page 316, the da
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Function Description db2_bind_param
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The IBM_DB2 extension This PHP exte
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9.3.5 Exception handling Error hand
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The error information that is gener
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9.3.6 Troubleshooting printf("NonCr
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10.1 An overview of UDRs and databa
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10.1.2 About UDRs specific examples
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Invoking a UDR You can invoke a UDR
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10.2 Developing UDRs To develop a U
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One variable in, one result out For
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10.2.2 UDRs in Java 5 1005 6 1006 7
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Note: The paths for .jar files that
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We use the following procedure to c
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For our example, JVPCLASSPATH is se
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10.2.3 UDRs in C and break somethin
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3. Set the bld file permissions as
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4. Create the function in dbaccess.
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Installing the DataBlade Any DataBl
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To connect to a database, run one o
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IBM Informix DataBlade module name
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interface, called BladeSmith, allow
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11.1 A brief overview of Ruby on Ra
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The following drivers allow Ruby to
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Data types The Ruby Informix driver
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03/07/2010 17:30 1,088 LICENSE 03/0
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The Rails Adapter can be installed
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server: demo_on username: informix
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Using Ruby Informix driver In this
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If the SQL statement returns only o
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Example 11-17 shows how to select a
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Example 11-19 shows a simple Ruby s
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# create a prepare object stmt = IB
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11.4 Using the Rails Adapter with R
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For more information, refer to: htt
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Figure 11-1 shows the Listing items
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11.5.1 Creating the Rails applicati
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11.5.4 Migrating the model Ruby on
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11.5.5 Starting the Rails web serve
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12.1 Basic concepts In this section
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A web service can perform the follo
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Example 12-1 shows a typical shell
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12.3.2 The w4gl utility For additio
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Parameter Description ws_func Funct
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In the remaining sections, we descr
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Example 12-8 shows the APP SERVER f
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Add details about the web service Y
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Source file information Finally, yo
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The Generate operation creates the
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process, running each individual st
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The compressed file is left in the
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Figure 12-3 shows the WSDL informat
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| Target Directory [/work/publish ]
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After this process is complete, the
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while using one of the I4GL web ser
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Keeping the wrapper C files in the
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12.6.2 Tracing A developer can use
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13.1 Concurrency and locking 13.1.1
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13.1.2 Lock duration The length of
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If a table is not created with row
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How the database server manages byt
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13.2.1 Deadlocks reader can read a
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ow that has not been committed (thi
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should check with the DBA to determ
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Note: For information about writing
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The amount of memory storage per lo
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The DIRECTIVES parameter The DIRECT
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13.5 Working with your database adm
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► Metadata updates affect logging
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Guidelines for setting VPCLASS: ►
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The lock level is determined by the
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area of specific interest. The func
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B.1 Distributed transactions A tran
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* Compile with: * on UNIX systems:
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} { printf("XA_PREPARE failed with
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When using distributed transactions
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Online resources ► IBM Informix D
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cast function 332 cast support func
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IfxDecimal public method 287 ifxdot
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jvpjavavm 341 jvplog 347 jvplogfile
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sql_longvarbinary 80, 96 sql_longva
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IBM Informix Developer’s Handbook
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